An official website of the United States government
AreaIndicates the area for which indexes are available.
BaseIndicates the designated reference date from which price change is measured, where the "current" base year is 1982-84=100 or more recent (S) and the "alternate" base year (A) is prior to the current base year (kept for contract purposes).
ItemIndicates the commodity, service, or special grouping for which indexes are available.
PeriodicityIndicates the frequency of observation (i.e. R=monthly or S=semi-annual data).
Seasonally AdjustedIndicates the adjustment of time series data to eliminate the effect of intrayear variations which tend to occur during the same period on an annual basis.
Last Modified Date: November 01, 2002